bluez5_utils: correct the experimental option text

In BlueZ 5.44 the --enable-experimental configure option only controls the
build of the Nokia OBEX PC Suite plugin. Correct the option prompt and help
text.

Cc: Marcin Bis <marcin@bis.org.pl>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/bluez5_utils/Config.in

@@ -57,9 +57,9 @@ config BR2_PACKAGE_BLUEZ5_UTILS_DEPRECATED
 	  ciptool, gatttool.
 
 config BR2_PACKAGE_BLUEZ5_UTILS_EXPERIMENTAL
-	bool "build experimental plugins"
+	bool "build experimental obexd plugin"
 	help
-	  Build BlueZ 5.x experimental plugins (SAP, NFC, ...).
+	  Build BlueZ 5.x experimental Nokia OBEX PC Suite plugin
 
 config BR2_PACKAGE_BLUEZ5_PLUGINS_SIXAXIS
 	bool "build sixaxis plugin"